Fallon, 39, was taken to a hospital after tumbling from Maritima a furlong from home in the EBF Hare Maiden Fillies' Stakes. He was discharged from Leicester Royal Infirmary on Monday evening.
His hopes of retaining his title were dimmed after Frankie Dettori rode a treble at the track. Dettori now leads Fallon in the championship by 13 winners.
"There is nothing broken, though he did have quite a bang on the head," said Fallon's agent, Dave Pollington.
The Irish jockey could be back in the saddle as early as Tuesday.
A stewards' inquiry into the incident found that the fall was caused by another horse running into Fallon's mount.
The jockey was catapulted out of the saddle and kicked by yet another horse.